<local:MainViewModel 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"       
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:SamsungRemoteWP7" 
    SampleProperty="Sample Text Property Value">
    
    <local:MainViewModel.TvItems>
        <local:TvItemViewModel TvName="living room tv" Port="55000" TvAddress="10.0.0.38"/>
        <local:TvItemViewModel TvName="bedroom tv" Port="55000"/>
    </local:MainViewModel.TvItems>
</local:MainViewModel>